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chandrawi / LoRaRF-Arduino

Arduino library for basic transmitting and receiving data using LoRa and FSK modulation
MIT License
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LLCC68 Initialization time #9

Closed ramonverde closed 1 year ago

ramonverde commented 1 year ago

I have checked that, with some fast CPU devices and the Ra-01SC module (LLCC68), the "begin" method can return an error because the LLCC68 cannot initialialize between the sx126x_reset and the send of sx126x_setStandby. Checking the LLCC68 datasheet, in the table "Table 8-1: SPI Timing Requirements", there is a "t10" time of 100us that must be waited when switching from SLEEP to STDBY_RC mode, and in "8.2.2 SPI Timing When the Transceiver Leaves Sleep Mode" it's said " "...This is also true for start-up at battery insertion or after a hard reset."

I have tested adding that small delay after the reset and it makes the LLCC68 to init OK all the times. I hace created a pull request: #8

chandrawi commented 1 year ago

I have check LLCC68 datasheet and just notice that 100 µs delay is needed after switch NSS to HIGH for waking SX1261, SX1262, and LLCC68. Good job for noticing it. I just merge your pull request. I will publish new release for this fix.